For a second time this season, at least 41 states are reporting high or very high levels of the flu. Here's how to stay safe.

Those experiencing severe flu symptoms, such as difficulty breathing ... This is especially true for young children, elderly adults, pregnant women, or those with chronic health conditions ...

An infectious disease MD explains for how long you're likely to transmit the flu to others, with her advice for preventing viral infection.

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most common and the most severe.

Flu season is ... Other symptoms include: Fever Cough Runny nose Red eyes The fever can spike to more than 104 degrees, according to the CDC. Unvaccinated pregnant people, infants younger than ...

At least four cattle herds in Nevada have tested positive for a strain of H5N1 bird flu never before seen in cows, state ...